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<h2><span class="refentrytitle">Struct template expression_function</span></h2>
<p>boost::yap::expression_function</p>
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<h2 class="refsynopsisdiv-title">Synopsis</h2>
<div class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../yap/reference.html#doxygen.headers.algorithm_8hpp" title="Header &lt;boost/yap/algorithm.hpp&gt;">boost/yap/algorithm.hpp</a>&gt;

</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">&gt;</span> 
<span class="keyword">struct</span> <a class="link" href="structboost_1_1yap_1_1expression__function.html" title="Struct template expression_function">expression_function</a> <span class="special">{</span>

  <span class="comment">// <a class="link" href="structboost_1_1yap_1_1expression__function.html#id-1_3_45_8_2_2_1_1_1_4-bb">public member functions</a></span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span><span class="special">...</span> U<span class="special">&gt;</span> <span class="keyword">decltype</span><span class="special">(</span><span class="keyword">auto</span><span class="special">)</span> <a class="link" href="structboost_1_1yap_1_1expression__function.html#doxygen.headers.structboost_1_1yap_1_1expression__function_1a946c6424d5e9056e376d4bee0ebc7339"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">U</span> <span class="special">&amp;&amp;</span><span class="special">...</span><span class="special">)</span><span class="special">;</span>

  <span class="comment">// public data members</span>
  <span class="identifier">Expr</span> <span class="identifier">expr</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="id-1.3.45.8.2.2.3.4"></a><h2>Description</h2>
<p>A callable type that evaluates its contained expression when called.</p>
<p><b>See Also: </b><code class="computeroutput"><a class="link" href="namespaceboost_1_1yap_1a30d04ee48096df16ab6c869eb3e78dde.html" title="Function template make_expression_function">make_expression_function()</a></code> </p>
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</p>
<div class="refsect2">
<a name="id-1.3.45.8.2.2.3.4.4"></a><h3>
<a name="id-1_3_45_8_2_2_1_1_1_4-bb"></a><code class="computeroutput">expression_function</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span><span class="special">...</span> U<span class="special">&gt;</span> <span class="keyword">decltype</span><span class="special">(</span><span class="keyword">auto</span><span class="special">)</span> <a name="doxygen.headers.structboost_1_1yap_1_1expression__function_1a946c6424d5e9056e376d4bee0ebc7339"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">U</span> <span class="special">&amp;&amp;</span><span class="special">...</span> u<span class="special">)</span><span class="special">;</span></pre></li></ol></div>
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        Distributed under the Boost Software License, Version 1.0. (See accompanying
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